LT6119-1/LT6119-2
Current Sense Amplifier,
Reference and Comparators
with POR
Fea T Descrip T
n
Current Sense Amplifier
The LT 6119 is a complete high side current sense device
Fast Step Response: 500ns
that incorporates a precision current sense amplifier, an
Low Offset Voltage: 200V Maximum
integrated voltage reference and two latching comparators.
Low Gain Error: 0.2% Maximum
Two versions of the LT6119 are available. The LT6119-1
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Internal 400mV Precision Reference
has the comparators connected in opposing polarity and
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Internal Latching Comparators
the LT6119-2 has the comparators connected in the same
Power-On Reset Capability
polarity. The comparator latch functionality can be enabled
Fast Response Time: 500ns
or disabled and the comparators can be configured to reset
Total Threshold Error: 1.25% Maximum
upon power-on. The input and the open-drain outputs of
Two Comparator Polarity Options
the comparators are independent from the current sense
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Wide Supply Range: 2.7V to 60V
amplifier. The comparator trip points and amplifier gain
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Supply Current: 550A
are configured with external resistors.
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Specified for 40C to 125C Temperature Range
The overall propagation delay of the LT6119 is typically
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Available in 10-Lead MSOP Package
only 1.4s, allowing for quick reaction to overcurrent and
undercurrent conditions. The 1MHz bandwidth allows the
a T LT6119 to be used for error detection in critical applica-
tions such as motor control. The high threshold accuracy
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Overcurrent, Undercurrent and Fault Detection
of the comparators, combined with the ability to latch
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Current Shunt Measurement
both comparators, ensures the LT6119 can capture high
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Battery Monitoring
speed events.
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Motor Control
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Automotive Monitoring and Control The LT6119 is fully specified for operation from 40C
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Industrial Control to 125C, making it suitable for industrial and automo-
tive applications. The LT6119 is available in a small
L, LT, LTC, LTM, TimerBlox, Linear Technology and the Linear logo are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
10-lead MSOP.
Typical a T
Fast Acting Fault Protection with Power-On Reset and Early Warning Response to Overcurrent Event
0.1
IRF9640
12V TO LOAD
V
LOAD
0.1F 10V/DIV
6.2V*
1k 100
3.3V
0V
24.9k
SENSEHI SENSELO
+
V
V OUTA
OUT
I
10k 1.62k 100k LOAD
LT6119-2
6.04k 200mA/DIV
LE
0mA
100nF
INC2
V
OUTC1
1k
250mA DISCONNECT
2.37k
5V/DIV
OUTC2
0V
100mA WARNING
V
OUTC2
2N2700 OUTC1 INC1
100mA WARNING
250mA DISCONNECT 5V/DIV
0V
V
1.6k
611912 TA01b
5s/DIV
611912 TA01a
*CMH25234B
611912f
1
For more information www.linear.com/LT6119-1
ion pplica
ions pplica
ion uresLT6119-1/LT6119-2
a Te Maxi Mu M r a T p c F T
(Note 1)
+
Total Supply Voltage (V to V ) .................................60V
TOP VIEW
Maximum Voltage
SENSELO 1 10 SENSEHI
+
+
LE 2 9 V
(SENSELO, SENSEHI, OUTA) ............................... V + 1V
OUTC2 3 8 OUTA
+
Maximum V (SENSELO or SENSEHI) ....................33V OUTC1 4 7 INC2
V 5 6 INC1
Maximum LE Voltage ................................................60V
MS PACKAGE
Maximum Comparator Input Voltage ........................60V
10-LEAD PLASTIC MSOP
= 160C/W, = 45C/W
Maximum Comparator Output Voltage......................60V JA JC
Input Current (Note 2) ..........................................10mA
SENSEHI, SENSELO Input Current ....................... 10mA
Differential SENSEHI or SENSELO Input Current ...2.5mA
Amplifier Output Short-Circuit Duration (to V ) .. Indefinite
Operating Temperature Range (Note 3)
LT6119I ................................................40C to 85C
LT6119H ............................................. 40C to 125C
Specified Temperature Range (Note 3)
LT6119I ................................................40C to 85C
LT6119H ............................................. 40C to 125C
Maximum Junction Temperature .......................... 150C
Storage Temperature Range .................. 65C to 150C
Lead Temperature (Soldering, 10 sec) ...................300C
o r D i n F Ma T
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE
LT6119IMS-1#PBF LT6119IMS-1#TRPBF LTGNV 10-Lead Plastic MSOP 40C to 85C
LT6119HMS-1#PBF LT6119HMS-1#TRPBF LTGNV 10-Lead Plastic MSOP 40C to 125C
LT6119IMS-2#PBF LT6119IMS-2#TRPBF LTGNW 10-Lead Plastic MSOP 40C to 85C
LT6119HMS-2#PBF LT6119HMS-2#TRPBF LTGNW 10-Lead Plastic MSOP 40C to 125C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: